Installation method of equipment, anchor member supporting mechanism, and anchor bolt unit

ABSTRACT

Efficiency of installation work of equipment such as an ECCS pump is enhanced. In an installation method of equipment, a pit can unit in which an upper side frame, a pit can, various reinforcing steels including vertical reinforcing bars reinforcing the above from a periphery, and an anchor plate supporting mechanism are integrated is manufactured in advance, and the pit can unit is placed on an MMR via a lower side frame. Further, an anchor bolt unit is disposed on the anchor plate supporting mechanism after primary concrete is deposited, a relative positional relationship of respective foundation bolts relative to the pit can is corrected by using a template, and secondary concrete is deposited under the state in which the positional relationship is corrected. After that, the ECCS pump is carried into the pit can, and an installation of the ECCS pump is completed by fixing the carried ECCS pump through the respective foundation bolts of which bottom sides are embedded.

TECHNICAL FIELD

The present invention relates to an installation method of equipmentsuch as a vertical pump used at, for example, an atomic power plant, ananchor member supporting mechanism and an anchor bolt unit used when theinstallation method of equipment is executed.

BACKGROUND ART

Conventionally, a bottomed cylindrical container made of a steel platecalled as a pit can is used for a placement of, for example, a largevertical pump in an atomic power plant and so on. The vertical pump andso on is fixed by foundation bolts under a state that a lower side of apump main body is inserted into the pit can embedded in base concrete.

Besides, an installation method and so on to efficiently install the pitcan are proposed. Namely, anchor bolts for equipment installation suchas the vertical pump are attached at a periphery of the pit can inadvance at a manufacturing factory in this installation method. Further,a coupling member is attached at a bottom portion of the pit can. Afterthat, a pit can module is formed by attaching reinforcing steels forreinforcement at the periphery of the pit can in this installationmethod. Further, the pit can module is mounted on a member to be coupledplaced on a base of an installation field of the vertical pump and so onvia the coupling member in this installation method. After that, aninstallation of the pit can main body is completed by depositingconcrete.

PRIOR ART REFERENCES Patent References

Reference 1: JP-A 2004-309406 (KOKAI)

Reference 2: JP-A 2002-147392 (KOKAI)

SUMMARY OF THE INVENTION Problems to Be Solved by the Invention

However, in the above-stated installation method, the anchor bolds forequipment installation are attached at the periphery of the pit can mainbody when the pit can module is manufactured. After that, theinstallation method further goes through a working process in which thereinforcing steels for reinforcement are attached at the periphery ofthe pit can main body. Accordingly, a relatively difficult work to placethe reinforcing steels at the periphery of the pit can while avoidinginterference with the anchor bolts on component layout is required inthis installation method. It is therefore required to improve workingefficiency as for the installation work of equipment including theinstallation of the pit can.

The present invention is made to solve the above-stated problems and anobject thereof is to provide an installation method of equipment, ananchor member supporting mechanism, and an anchor bolt unit capable ofenhancing installation work efficiency of the equipment.

Means for Solving the Problems

To attain the above-stated object, an installation method of equipmentaccording to an aspect of the present invention includes: disposing afirst frame at a position different from an installation location of theequipment; disposing reinforcing steels to reinforce the first frame anda pit container in a bottomed cylindrical state to be placed on thefirst frame from a periphery thereof; placing the pit container on thefirst frame positioning inside the reinforcing steels; attaching ananchor member supporting mechanism to the pit container, the anchormember supporting mechanism including a supporting member to support ananchor member in a ring state at an outer peripheral side of the pitcontainer, and a reinforcing member in a ring state having a center holeand in which a part of each reinforcing steel is penetrated from a gapformed between the center hole and an outer peripheral portion of thepit container while reinforcing the supporting member from the outerperipheral side of the pit container; placing a second frame on a baseto be the installation location of the equipment; placing a pitcontainer unit on the second frame via the first frame, the pitcontainer unit being formed by integrating the first frame, thereinforcing steels, the pit container and the anchor member supportingmechanism; embedding a portion at a lower side than the anchor membersupporting mechanism of the pit container unit, together with the secondframe, by primary concrete; disposing an anchor bolt unit in whichrespective bottom sides of plural foundation bolts for equipmentinstallation are respectively fixed to the anchor member on the anchormember supporting mechanism after the embedding by the primary concrete;correcting a relative positional relationship of the respectivefoundation bolts relative to the pit container by using a templatemember having plural positioning holes into which the plural foundationbolts on the anchor bolt unit can be individually inserted from upperend sides thereof; embedding the pit container unit and the anchor boltunit by secondary concrete except the template member under a state inwhich the positional relationship is corrected, an opening portion atupward of the pit container, and upper end sides of the pluralfoundation bolts; and carrying the equipment into the pit containerafter the template member is removed and fixing the carried equipmentthrough the respective foundation bolts of which bottom sides areembedded.

In this installation method, the pit container unit in which the firstframe, the pit container, the reinforcing steels reinforcing the abovefrom a periphery, and the anchor member supporting mechanism areintegrated is manufactured in advance, and the pit container unit isplaced on a base to be the installation location of the equipment viathe first and second frames. Further, in the installation method, theanchor bolt unit is disposed on the anchor member supporting mechanismafter the portion at the lower side than the anchor member supportingmechanism of the pit container unit is embedded by primary concrete.Next, in this installation method, the relative positional relationshipof the respective foundation bolts on the anchor bolt unit relative tothe pit container is corrected by using the template member. Further, inthis installation method, secondary concrete is deposited under thestate in which the positional relationship of the respective foundationbolts is corrected. After that, in this installation method, theequipment is carried into the pit container, and an installation of theequipment such as a vertical pump is completed by fixing the carriedequipment through the respective foundation bolts of which bottom sidesare embedded.

Namely, the installation method of equipment according to this aspect isthe one in which the reinforcing steels to reinforce the first frame andthe pit container from the periphery thereof are disposed before theanchor bolt unit in which the plural foundation bolts are fixed isdisposed at the pit container side. Accordingly, it is possible toperform the disposition work of the reinforcing steels around the pitcontainer relatively easily without concerning the interference with thefoundation bolts and so on, on the component layout according to theinstallation method. Besides, according to the installation method, itis possible to dispose the anchor bolt unit on the anchor membersupporting mechanism under a state in which a part of each reinforcingsteel is penetrated from a gap formed between the center hole of thering state reinforcing member included by the anchor member supportingmechanism and the outer peripheral portion of the pit container (namely,under a state in which the positions of the reinforcing steels arecontrolled). According to the installation method, it is possible toimprove the workability at the component disposition time.

Besides, the supporting member of the anchor member supporting mechanismmay be made up of, for example, plural plate state members respectivelyprotruding in a radial pattern from an outer peripheral portion of thepit container. Besides, the reinforcing member in the ring state may bemade up to integrally support the plural plate state members from abottom side.

Further, the anchor bolt unit is made up by respectively welding therespective bottom sides of the plural foundation bolts at predeterminedpositions on the anchor member respectively corresponding to positionsof plural installation holes bored at a casing of the equipment inadvance and positions of the plural positioning holes on the templatemember and so on. As stated above, it is possible to further improve theworkability at the equipment installation time by applying the anchorbolt unit in which the plural foundation bolts and the anchor member areintegrated in advance.

Effect of the Invention

According to the present invention, it is possible to provide theinstallation method of equipment, the anchor member supportingmechanism, and the anchor bolt unit capable of enhancing the efficiencyof the installation work of equipment.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a partial sectional view schematically illustrating a state inwhich an ECCS pump is installed by an installation method of equipmentaccording to an embodiment of the present invention.

FIG. 2 is a flowchart illustrating a manufacturing procedure of a pitcan unit.

FIG. 3 is a flowchart illustrating a construction procedure of a lowerside frame.

FIG. 4 is a flowchart illustrating a placement procedure of a pit canunit used for the installation of the ECCS pump in FIG. 1.

FIG. 5 is a sectional view illustrating a state in which a surface plateand a scaffold are placed on the other ground line different from aninstallation location of the ECCS pump in FIG. 1.

FIG. 6 is a sectional view illustrating a state in which an upper sideframe is placed on the surface plate in FIG. 5.

FIG. 7 is a sectional view illustrating a state in which verticalreinforcing bars are disposed at a periphery of the upper side frame inFIG. 6.

FIG. 8 is a sectional view illustrating a state in which a pit can istemporary placed relative to the upper side frame in FIG. 6.

FIG. 9A is a plan view illustrating an anchor plate supporting mechanismdisposed around the pit can.

FIG. 9B is a sectional view illustrating a state in which the anchorplate supporting mechanism is disposed around the pit can in FIG. 8.

FIG. 9C is an enlarged view of an A part in FIG. 9B.

FIG. 10A is a sectional view illustrating a state in which the pit canand the anchor plate supporting mechanism in FIG. 9B are reinforced byvarious reinforcing bars including the vertical reinforcing bars.

FIG. 10B is an enlarged view of a B part in FIG. 10A.

FIG. 11A is a sectional view illustrating a state in which a lower sideframe is placed on a mermaid rock to be an installation location of theECCS pump in FIG. 1.

FIG. 11B is a C-C sectional view of FIG. 11A.

FIG. 12 is a sectional view illustrating a state in which lower stepreinforcing members are attached to the lower side frame in FIG. 11A.

FIG. 13A is a sectional view illustrating a state in which bottomreinforcements are placed at a periphery of the lower side frame in FIG.12.

FIG. 13B is a D-D sectional view of FIG. 13A.

FIG. 14 is a sectional view illustrating a state in which remainingbottom reinforcements and reinforcement frames are placed at theperiphery of the lower side frame.

FIG. 15 is a sectional view illustrating a state in which the pit canunit in FIG. 10 is carried in on the lower side frame in FIG. 14.

FIG. 16 is a sectional view illustrating a state in which the carriedpit can unit in FIG. 15 is placed on the lower side frame.

FIG. 17 is a sectional view illustrating a state in which primaryconcrete is deposited around the pit can unit in FIG. 16.

FIG. 18 is a sectional view illustrating a state in which a staymaterial, suspended pieces are removed from the pit can unit in FIG. 17.

FIG. 19A is a plan view illustrating an anchor plate unit.

FIG. 19B is a sectional view of the anchor plate unit illustrated inFIG. 19A.

FIG. 20 is a sectional view illustrating a state just before the anchorplate unit illustrated in FIGS. 19 is mounted on an anchor platesupporting mechanism at a pit can unit side.

FIG. 21A is a sectional view illustrating a state in which a template istemporary placed at the pit can unit side.

FIG. 21B is an E-E sectional view of FIG. 21A.

FIG. 22 is a sectional view illustrating a state in which topreinforcements are disposed at an upper portion of the pit can unit.

FIG. 23 is a sectional view illustrating a state in which the templateis placed again at the pit can unit side where the top reinforcementsare disposed at the upper portion thereof.

FIG. 24 is a sectional view illustrating a state in which secondaryconcrete is deposited around an upper side portion of the pit can unit.

EMBODIMENTS FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the present invention are described based onthe drawings. Here, FIG. 1 is a partial sectional view schematicallyillustrating a state in which an ECCS (Emergency Core Cooling System)pump 71 is installed by an installation method of equipment according toan embodiment of the present invention. Note that a peripheral structureat an embedded portion of the ECCS pump 71 is not illustrated in FIG. 1.

As illustrated in FIG . 1, the ECCS pump 71 is one of equipments placedin an atomic power plant and so on. The ECCS pump 71 is a vertical pumpto supply cooling water to a reactor core in an emergency. The ECCS pump71 includes a base part 74 and a lower casing 75 constituting a casingportion (a casing of a pump main body called also as a barrel), a waterinlet part 72 where the water is entered, and a water outlet part 73 tobe a discharge side of water, and so on.

The ECCS pump 71 is installed under a state in which the lower casing 75is accommodated in a later-described pit can 20 a of a pit can unit 20embedded inside secondary concrete (concrete body) 61. In detail, pluralinstallation holes 74 a for equipment installation are bored in advanceat the base part 74. The ECCS pump 71 is installed on the secondaryconcrete 61 under a state in which respective foundation bolts 54 ofwhich bottom sides are embedded are inserted into these installationholes 74 a, and engaged by nuts 54 a.

Next, the installation method of equipment of the present embodiment isdescribed by using flowcharts illustrated in FIG. 2 to FIG. 4, and viewsmechanically illustrating respective working processes of FIG. 1 andFIG. 5 to FIG. 24. Here, the working processes illustrated by dottedlines in FIG. 2 to FIG. 4 represent construction side works (worksrelating to construction application), on the other hand, the workingprocesses illustrated by solid lines represent mechanical side works(works relating to attachment of various components) other than theconstruction side works.

At first, as illustrated in FIG. 2 and FIG. 5, a surface plate (groundassembling surface plate) 15 is placed on a G.L (Ground Line) 12 by theconstruction side work at the other location (manufacturing factory andso on) different from a final installation location of the ECCS pump 71.Besides, temporary receiving structures 14 are provided on the surfaceplate 15. Further, a scaffold (ground assembling scaffold) 16 isprovided on the G.L 12 (S[ step]1).

Next, as illustrated in FIG. 2 and FIG. 6, an upper side frame (firstframe) 17 made of, for example, steel to place the pit can 20 a on thesurface plate 15 via the temporary frame 14 is mounted and a leveladjustment in a height direction is performed (S2).

Further, as illustrated in FIG. 2 and FIG. 7, vertical reinforcing bars18 to be reinforcing steels to reinforce the upper side frame 17 and thepit can 20 a from a periphery thereof are disposed (inserted andtemporary disposed) by the construction side work so that an upper sidethereof becomes a posture standing in a vertical direction (S3) beforethe pit can 20 a is placed (temporary set) on the upper side frame 17.

Next, as illustrated in FIG. 2 and FIG. 8, a temporary placing(temporary setting) of the pit can 20 a to which suspended pieces(suspended clasps) 46 are attached is performed by suspending on theupper side frame 17 by an equipment side work (S4). Here, the pit can 20a is constituted by a bottomed cylindrical pit container made of, forexample, a steel plate having a space capable of accommodating the lowercasing 75 of the ECCS pump 71 from an upper side as illustrated in FIG.1 and FIG. 8.

Subsequently, as illustrated in FIG. 2 and FIG. 9A to FIG. 9C, an anchorplate supporting mechanism (anchor member supporting mechanism) 21including an anchor plate supporting member (called also as an anchorplate receiving beam) 22 functioning as a supporting member and a ringstate dummy anchor plate 22 a functioning as a reinforcing member areattached to a pit can 20 a side (S5). Here, the anchor plate supportingmember 22 is constituted by plural plate state (or block state) membersrespectively protruding from an outer peripheral portion of the pit can20 a in a radial pattern. The anchor plate supporting member 22 supportsa later-described ring state anchor plate 58 (refer to FIG. 20) at anouter peripheral side of the pit can 20 a.

Here, the attachment of the anchor plate supporting member 22 isdescribed in more detail. As illustrated in FIG. 9A and FIG. 9B, markingpositions of an angle member 23 attached to the pit can 20 a arechecked. For example, 12 pieces of anchor plate supporting members 22are welded at the marking positions (positions spaced with intervals of,for example, every 30 degrees in a circumferential direction of theangle member 23) of the angle member 23. At this time, it should benoted not to directly weld the anchor plate supporting member 22 and thepit can 20 a. Besides, suspended pieces (suspended clasps) 24 areattached to the upper side frame 17 as illustrated in FIG. 9B.

As illustrated in FIG. 9A to FIG. 9C, the ring state dummy anchor plate22 a has a center hole 22 b formed with, for example, an inside diameterof P1. The dummy anchor plate 22 a reinforces the anchor platesupporting member 22 from an outer peripheral side of the pit can 20 a.In the dummy anchor plate 22 a, a part (a tip portion) of each verticalreinforcing bar 18 is penetrated from a gap formed between the centerhole 22 b and the outer peripheral portion of the pit can 20 a asillustrated in FIG. 9A.

Next, as illustrated in FIG. 2, FIG. 10A and FIG. 10B, a groundassembling of reinforcing steels for reinforcement around the pit can 20a is performed. Namely, circumferential reinforcing bars 26, hairpinreinforcements 27, and setup reinforcements 25 are placed (S6). Thecircumferential reinforcing bar 26 is a reinforcing steel to reinforcean outer peripheral side of the vertical reinforcing bar 18. The hairpinreinforcement 27 is a reinforcing steel to reinforce between an innerside of the vertical reinforcing bar 18 and the lower side of the pitcan 20 a. The setup reinforcement 25 is a reinforcing steel to reinforcebetween the inner side of the vertical reinforcing bar 18 and the anchorplate supporting member 22, and between the inner side of the verticalreinforcing bar 18 and the hairpin reinforcement 27.

When the reinforcing steels for reinforcement as stated above areplaced, the ground assembling of the reinforcing bars around the pit can20 a is performed so that a separation distance P2 falls within atolerance range in consideration of the inside diameter P1 of the dummyanchor plate 22 a as illustrated in FIG. 10A and FIG. 10B, and thereby,the vertical reinforcing bars 18 are permanently placed. The separationdistance P2 is a distance between the outer peripheral portion of thepit can 20 a and the inner side portion of the vertical reinforcing bar18. The pit can unit (pit container unit) 20 in which the upper sideframe 17, the pit can 20 a, the anchor plate supporting mechanism 21,and the reinforcing steels (the vertical reinforcing bars 18, thecircumferential reinforcing bars 26, the hairpin reinforcements 27, andthe setup reinforcements 25) around the pit can 20 a including thevertical reinforcing bars 18 are unitized (prefabricated), is therebyconstituted. Here, in the installation method of equipment of thepresent embodiment, the reinforcing steels (the vertical reinforcingbars 18, the circumferential reinforcing bar 26, and so on) around thepit can 20 a are constructed as illustrated in FIG. 10A and FIG. 10Bbefore a later-described anchor bolt unit 57 to which the foundationbolts 54 are fixed is disposed at the pit can 20 a side. According tothe installation method of equipment of the present embodiment, it ispossible to easily perform a disposing work of the reinforcing steelsaround the pit can 20 a without concerning interference with thefoundation bolts 54 on a component layout.

On the other hand, the ground is dug down until a base rock exposes atthe installation location of the ECCS pump 71, and an inspection of theexposed base rock is performed as illustrated in FIG. 3 (S11). Next,concrete is deposited on the base rock after the inspection is completedwhile curing is performed (S12), and an MMR (MerMaid Rock) 11 beingso-called an artificial base rock is formed as illustrated in FIG. 11A.

Subsequently, as illustrated in FIG. 11A and FIG. 11B, a post cast plate32 is placed on the MMR 11 via a metal anchor and so on after a markingof a placement position of a lower side frame (second frame) 30constituted by steel and so on for placing the pit can unit 20 isperformed on the MMR 11.

Further, the lower side frame 30 which is already prefabricated (whichis already component processed and temporary assembled) is carried in byusing a crane and so on. After a positioning and a level adjustment(height adjustment) of the carried lower side frame 30 are performed,respective leg parts of the lower side frame 30 are fixed on the postcast plate 32 by welding. Besides, span seals 31 as a sealing materialare attached to the respective leg parts of the lower side frame 30 asillustrated in FIG. 3 and FIG. 12. Further, lower step reinforcingmembers 33 are stretched across at the lower side of adjacent leg partsof the lower side frame 30 with each other to reinforce the lower sideframe 30 (S13).

After the lower side frame 30 is placed, bottom reinforcements(reinforcing steels for reinforcement of bottom end portion) 34 aredisposed in a matrix state as illustrated in FIG. 3, FIG. 13A, and FIG.13B. Next, units of the bottom reinforcements 34 are disposed in thematrix state are overlaid for three steps, upper step reinforcingmembers 35 are stretched across at upper sides of the adjacent leg partsof the lower side frame 30 with each other, to further reinforce thelower side frame 30 (S14). Next, as illustrated in FIG. 14, bottomreinforcements (reinforcing steels) 36 are disposed in a matrix state ata further upper part of the upper step reinforcing members 35.Subsequently, a work reinforcement frame 37 is placed in a vicinity ofthe lower side frame 30 on the bottom reinforcements 36.

Next, as illustrated in FIG. 15, a work scaffold 40 is placed by usingthe reinforcement frame 37. After that, wires 41, 43 and a suspendedbalance 42 are attached to the pit can unit 20 carried from a temporaryassembling location. In this state, the pit can unit 20 is suspended in(carried in) to an upper surface of the lower side frame 30, and the pitcan unit 20 is placed on the lower side frame 30 via the upper sideframe 17 (S21) as illustrated in FIG. 4 and FIG. 15. In detail, theupper side frame 17 is welded along with marking lines and so on markedon the lower side frames 30 in advance, and the pit can unit 20 isinstalled.

Further, as illustrated in FIG. 15 and FIG. 16, wires (stay materials)45 to prevent the pit can 20 a from floating and falling in liquid statecement and mortar are each coupled between the suspended piece 46 at thepit can 20 a side and the suspended piece 24 of the upper side frame 17.Here, it is checked if a placement position in a plane direction, alevel in a height direction, and a vertical degree (and a circularity)of the pit can 20 a falls within the tolerance range.

After that, a portion at the lower side of the pit can unit 20 than theanchor plate supporting mechanism 21 is embedded by primary concrete 51together with the lower side frame 30 as illustrated in FIG. 4 and FIG.17 (the primary concrete 51 is deposited up to a primary concretedeposit virtual surface 51 a illustrated in FIG. 17) (S22).

As illustrated in FIG. 4 and FIG. 18, after the embedding process by theprimary concrete 51 is completed, the wires 45 as the stay materials andthe suspended pieces 46 of the pit can 20 a are removed (S23). Next, asillustrated in FIG. 19A to FIG. 21B, the anchor bolt unit 57 to whichrespective bottom sides of the plural foundation bolts (called also asthe anchor bolt) 54 for equipment installation are respectively fixed tothe anchor plate 58 is disposed on the anchor plate supporting mechanism21 of the pit can unit 20 as illustrated in FIG. 20 (S24). Here, in theinstallation method of equipment of the present embodiment, it ispossible to dispose the anchor bolt unit 57 on the anchor platesupporting mechanism 21 under the state in which the tip portions of thevertical reinforcing bars 18 are penetrated from the gap formed betweenthe center hole 22 b of the ring state dummy anchor plate 22 a includedby the anchor plate supporting mechanism 21 and the outer peripheralportion of the pit can 20 a (a state in which the positions of thereinforcing steels around the pit can 20 a are controlled) asillustrated in FIG. 9A and FIG. 9B. Accordingly, the working efficiencyat the component disposing time can be improved.

Besides, as illustrated in FIG. 19A and FIG. 19B, in the pluralfoundation bolts 54 on the anchor bolt unit 57, the respective bottomsides of the foundation bolt main bodies are respectively (engaged bynuts 54 b, 54 c and) welded at predetermined positions on the anchorplate 58 respectively corresponding to the positions of the pluralinstallation holes 74 a bored in advance at the base part 74 of the ECCSpump 71 and positions of plural positioning holes 53 a on alater-described template (template member) 53 (refer to FIG. 21A).Besides, the respective positioning holes 53 a on the template 53 arebored (coaxially processed) at, for example, the same step as a boringprocess of the installation holes 74 a on the base part 74 so as toplace the foundation bolts 54 with high accuracy.

Further, as illustrated in FIG. 21A and FIG. 21B, a relative positionalrelationship of the respective foundation bolts 54 relative to the pitcan 20 a is corrected by using the template 53 made of, for example, asteel plate having the plural positioning holes 53 a into which theplural foundation bolts 54 on the anchor bolt unit 57 can beindividually inserted from upper end sides thereof. In detail, forexample, the template 53 is positioned such that, for example, positionsof marks marked on the template 53 in advance match with positions ofmarks marked on the pit can 20 a in advance.

In more detail, a temporary disposition (temporary setting) of thetemplate 53 is performed firstly as illustrated in FIG. 4, FIG. 21A, andFIG. 21B (S25). Specifically, the template 53 is fixed via the nuts 54 aunder the state in which the respective foundation bolts 54 are insertedinto the positioning holes 53 a. Further, a position (a position inheight and plane directions) of the template 53 is displaced by using,for example, a liner (spacer) and so on, the positional relationship isfallen within the tolerance range, and thereafter, the anchor platesupporting member 22 on the anchor plate supporting mechanism 21 and theanchor plate 58 at a bottom portion of the anchor bolt unit 57 are spotwelded.

After that, the template 53 is temporary removed (S26), and topreinforcements 55 being reinforcing steels to reinforce around an upperside of the pit can unit 20 are disposed for, for example, two steps ina matrix state (S27) as illustrated in FIG. 4 and FIG. 22. After that,as illustrated in FIG. 4 and FIG. 23, the template 53 is placed again(permanent disposition) (S28), and the position of the template 53 isdisplaced. Accordingly, the relative positional relationship of therespective foundation bolts 54 relative to the pit can 20 a is finallycorrected (S29).

Next, the pit can unit 20 and the anchor bolt unit 57 are embedded bysecondary concrete 61 (deposit the secondary concrete 61 up to asecondary concrete deposit virtual surface 61 a illustrated in FIG. 23)as illustrated in FIG. 4 and FIG. 24 except the template 53 in the statein which the positional relationship thereof is finally corrected, anopening portion at upside of the pit can 20 a, and upper end sides ofthe respective foundation bolts 54 (S30).

After the secondary concrete 61 is deposited, various measurements areperformed after the template 53 is removed as illustrated in FIG. 4 andFIG. 24 (S31). For example, it is checked if concentricity of a centerof the template 53 and a center of the pit can 20 a falls within thetolerance range. Besides, it is checked if a height level at an upperend of the foundation bolt 54 falls within the tolerance range, and soon.

Further, as illustrated in FIG. 4 and FIG. 24, the ECCS pump 71 iscarried into an accommodating space of the pit can 20 a after thetemplate 53 is removed as illustrated in FIG. 1, and the carried ECCSpump 71 is fixed via the respective foundation bolts 54 of which bottomsides are embedded and the nuts 54 a (S32).

As stated above, in the installation method of equipment according tothe present embodiment, the pit can unit 20 in which the upper sideframe 17, the pit can 20 a, various reinforcing steels including thevertical reinforcing bars 18 reinforcing the above from a peripherythereof, and the anchor plate supporting mechanism 21 are integrated ismanufactured in advance. Further, the manufactured pit can unit 20 isplaced on the MMR 11 to be the installation location of the equipmentvia the lower side frame 30 and the upper side frame 17. Further, theanchor bolt unit 57 is disposed on the anchor plate supporting mechanism21 after the portion at the lower side of the pit can unit 20 than theanchor plate supporting mechanism 21 is embedded by the primary concrete51. Next, the positional relationship of the respective foundation bolts54 on the anchor bolt unit 57 relative to the pit can 20 a is correctedby using the template 53. Further, the secondary concrete 61 isdeposited under a state in which the positional relationship of therespective foundation bolts 54 is corrected. After that, the ECCS pump71 is carried into the pit can 20 a, and the installation of the ECCSpump 71 is completed by fixing the carried ECCS pump 71 through therespective foundation bolts 54 of which bottom sides are embedded.

Namely, the installation method of equipment of the present embodimentis the method in which the reinforcing steels around the pit can 20 asuch as the vertical reinforcing bars 18 and the circumferentialreinforcing bars 26 are disposed as illustrated in FIG. 10A and FIG. 10Bbefore the anchor bolt unit 57 to which the plural foundation bolts arefixed is disposed at the pit can 20 a side. According to theinstallation method of equipment of the present embodiment, it ispossible to easily perform the disposition work of the reinforcingsteels around the pit can 20 a without concerning the interference withthe foundation bolts 54 on the component layout.

Besides, according to the installation method of equipment of thepresent embodiment, it is possible to dispose the anchor bolt unit 57 onthe anchor plate supporting mechanism 21 under the state in which thetip portions of the vertical reinforcing bars 18 are penetrated from thegap formed between the center hole 22 b of the ring state dummy anchorplate 22 a included by the anchor plate supporting mechanism 21 and theouter peripheral portion of the pit can 20 a (namely, under the state inwhich the positions of the reinforcing steels around the pit can 20 aare controlled) as illustrated in FIG. 9A and FIG. 9B. Accordingly, itis possible to improve the assembling workability at the componentdisposition time according to the installation method of equipment ofthe present embodiment. In other words, the dummy anchor plate 22 aenables the function to reinforce the anchor plate supporting member 22and the function to control the positions of the reinforcing steelsaround the pit can 20 a including the vertical reinforcing bars 18 by asingle member.

As stated above, the present invention is concretely described by theembodiments, but the present invention is not limited only to theseembodiments, and all changes which come within the meaning and range ofequivalency of the claims are therefore intended to be embraced therein.

INDUSTRIAL APPLICABILITY

The present invention is also useful in a case when an equipment, forexample, such as a sump tank is installed in addition to theinstallation of the vertical pump such as the ECCS pump.

EXPLANATION OF NUMERALS AND SYMBOLS

17 . . . upper side frame, 18 . . . vertical reinforcing bar, 20 . . .pit can unit, 20 a . . . pit can, 21 . . . anchor plate supportingmechanism, 22 . . . anchor plate supporting member, 22 a . . . dummyanchor plate, 22 b . . . center hole, 25 . . . setup reinforcement, 26 .. . circumferential reinforcing bar, 27 . . . hairpin reinforcement 30 .. . lower side frame, 51 . . . primary concrete, 53 . . . template, 53 a. . . positioning hole, 54 . . . foundation bolt, 55 . . . topreinforcement, 57 . . . anchor bolt unit, 58 . . . anchor plate, 61 . .. secondary concrete, 71 . . . ECCS pump, 74 . . . base part, 74 a . . .installation hole, 75 . . . lower casing

1. An installation method of equipment, comprising: disposing a firstframe at a position different from an installation location of theequipment; disposing reinforcing steels to reinforce the first frame anda pit container in a bottomed cylindrical state to be placed on thefirst frame from a periphery thereof; placing the pit container on thefirst frame positioning inside the reinforcing steels; attaching ananchor member supporting mechanism to the pit container, the anchormember supporting mechanism including a supporting member to support ananchor member in a ring state at an outer peripheral side of the pitcontainer, and a reinforcing member in a ring state having a center holeand in which a part of each reinforcing steel is penetrated from a gapformed between the center hole and an outer peripheral portion of thepit container while reinforcing the supporting member from the outerperipheral side of the pit container; placing a second frame on a baseto be the installation location of the equipment; placing a pitcontainer unit on the second frame via the first frame, the pitcontainer unit being formed by integrating the first frame, thereinforcing steels, the pit container and the anchor member supportingmechanism; embedding a portion at a lower side than the anchor membersupporting mechanism of the pit container unit, together with the secondframe, by primary concrete; disposing an anchor bolt unit, in whichrespective bottom sides of plural foundation bolts for equipmentinstallation are respectively fixed to the anchor member, on the anchormember supporting mechanism after the embedding by the primary concrete;correcting a relative positional relationship of the respectivefoundation bolts relative to the pit container by using a templatemember having plural positioning holes into which the plural foundationbolts on the anchor bolt unit can be individually inserted from upperend sides thereof; embedding the pit container unit and the anchor boltunit by secondary concrete except the template member under the state inwhich the positional relationship is corrected, an opening portion atupward of the pit container, and upper end sides of the pluralfoundation bolts; and carrying the equipment into the pit containerafter the template member is removed, and fixing the carried equipmentthrough the respective foundation bolts of which bottom sides areembedded.
 2. The installation method of equipment according to claim 1,wherein the step of the correcting the positional relationship of thepit container and the respective foundation bolts includes: performing aspot welding of the supporting member on the anchor member supportingmechanism and the anchor member at a bottom portion of the anchor boltunit after a position of the template member is displaced under a statein which the corresponding respective foundation bolts are inserted intothe respective positioning holes so that the positional relationshipfalls within a tolerance range.
 3. The installation method of equipmentaccording to claim 1, wherein the equipment to be an installation objectis a vertical pump.
 4. The installation method of equipment according toclaim 2, wherein the step of the correcting the positional relationshipof the pit container and the respective foundation bolts includes:temporary removing the template member and disposing reinforcing steelsto reinforce a periphery at an upper side of the pit container unitafter the supporting member and the anchor member are spot welded.
 5. Ananchor member supporting mechanism, used to execute the installationmethod of equipment according to claim 1, wherein the supporting memberis made up of plural plate state members respectively protruding in aradial pattern from an outer peripheral portion of the pit container,and the reinforcing member in the ring state integrally supports theplural plate state members from a bottom side.
 6. An anchor bolt unit,used to execute the installation method of equipment according to claim1, wherein bottom sides of foundation bolt main bodies are respectivelywelded at predetermined positions on the anchor member respectivelycorresponding to positions of plural installation holes bored at acasing of the equipment in advance and positions of the pluralpositioning holes on the template member.